John Gill Commentary 2 Kings 17:34

"Unto this day they do after the former manner: they fear not Jehovah, neither do they after their statutes, or after their ordinances, or after the law or after the commandment which Jehovah commanded the children of Jacob, whom he named Israel;" — 2 Kings 17:34 (ASV)

Unto this day they do after the former manners
Which may be understood either of the new colonies in Samaria doing after the former customs in their own land, or after the customs of the idolatrous Israelites; or of such of them as were left in the land, who repented not of their idolatries, nor reformed from them:

they fear not the Lord ;
did not worship him, at least not alone, and much less in a spiritual manner, with reverence and godly fear:

neither do they after their statutes, or after their ordinances, or
after the law and commandment which the Lord commanded the children of
Jacob, whom he named Israel ;
that is, they did not observe the statutes and ordinances of the law given on Mount Sinai respecting religious worship, to act according to them.